Mono-Polar Cell 熔融鹽電解에 의한 마그네슘 제조
Preparation of Magnesium by Fused Salt Electrolysis Using Mono-Polar Cell
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참고문헌
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초록
마그네슘 용융염 전해시 적정 조업조건을 확립하고자 자체 설계 제작한 150A급 mono-polar형 전해조를 사용하여 24시간 연속 전해 조업을 수행하였다. MgCl2 25%, NaCl 55%, CaCl2 19%, CaF2 1%의 전해욕 조성으로 전해온도 720~740℃, 전해전압 7 V, 음극 전류 밀도 0.7-0.75 A/㎠, 전극 간격 6 ㎝의 운전조건에서 24시간 연속 조업을 수행하였으며, 전해 전압 및 전류 변화, 전해욕 조성 변화, 전류 효율 등을 조사하였다. 시험결과 제작한 전해셀의 조업성이 양호하였으며, 순도 99% 이상의 금속 마그네슘을 회수하였고 전류효율 89%를 달성할 수 있었다. 본 연구를 통하여 마그네슘 용융염 전해장치 제작에 필요한 기초자료를 축적할 수 있었다.
Abstract
Continuous operation for 24h was carried out to establish the optimum condition at the magnesium fused salt electrolysis using a self made 150 ampere mono-polar type cell. An electrolyte composition of MgCl2 25%, NaCl 55%, CaCl2 19%, CaF2 1% was electrolyzed with applied voltage 7 V, cathode current density 0.7-0.75 A/㎠, electrode distance 6 ㎝ at 720~740℃ for 24 hours. Changes of applied current, composition of the electrolyte, current efficiency were investigated. Through the experiments, there were not any operating troubles with the self-made electrolytic cell. Purity of the electrolyzed magnesium metal was above 99%, and 89% of current efficiency was achieved. Some basic data for scale-up of the magnesium electrolysis equipment which would be necessary for commercialization were obtained.
참고문헌 (11)
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